Pneumatic and other power hand-machine suspender



T. MALCOLM..

PNEUMATIC AND OTHER POWER HAND MACHINE SUSPENDER.

APPLICATION HLED NOV. l 31 1919.

Patented Feb. 24, 1920.

2 SHEETS-SHEET I.

(L jmwniar- Wflalcobw Z Mu -5507 r 3 W6- T. MALCOLM. PNEUMATIC AND OTHER POWER HAND MACHINE SUSPENDER- APPLICATION FILED NOV. 13, i919.

Patented Feb. 24,1920. 2 SHLETS--SHEET 2.

j j I niv rnn srrns EN Orrion T THOMAS MALCOLM, or SCOTSTOUN, SCOTLAND.

BNEUMATICV AND OTHER POWER HARD-MACHINE susrnnnnn To all whom it may concern:

Be it known that I, THOMAS'MALCOLM, a subject of the King of Great Britain and Ireland and the Isle of -Man, and. a resident of Scotstoun, Rent'rewshire, Scotland, have invented new and useful Improvements in Pneumatic and other Power Hand-Machine Suspender, of which the following is a specification.

This invention relates to means for suspending while in use pneumatic or other power hammer or like machine employed in shipbuilding or other construction work.

My invention consists essentially of a bracket, or of any suitable number of brackets, made of wrou ht iron, mild steel or cast steel, said bracItet being adapted to be inserted and supported in any conveniently placed rivet or bolt hole. Means are provided to retain the said bracket in the required position. The pneumatic hammer, or other tool is suspended from the said bracket or brackets in any suitable manner.

In order that my invention may be properly understood I have hereunto appended two explanatory sheets of drawings which show one form of carrying my invention into effect. My invention is shown in conjunction with a rail, a carriage or trolley on said rail, and a counter-balanced tool suspended from said rail, but it must be clearly understood that I make no claim to said rail carriage or counter-balanced tool.

Referring to these drawings Figure 1 is a View of one form of my bracket inserted in a rivet or bolt hole and showing a rail supported on said bracket and a carriage or trollev mounted on said rail. I l I Fig. 1 is a plan view of onciform of bracket made under my invention.

Fig. 1 is a detail of one form of bracket used to support a. bracket such as is illustrated in Fig. 1.

Fig. 2 shows a view of a rai such as would be supported by brackets made under my irrvention, and having a carriage or trolley with means for holding a counter-balanced tool thereon. I

Fig. 2" is an end view of Fig. 2.

Fig. 3 is a similar view to Fig. 2 but showing the support ng brackets and a tool with a counter-balancin weight suspended from. the carriage or trolley.

Figs. 4 and 4* show the COIlSlJI'LlCtlOIlQOf thereon such as may Specification of Letters Patent. Patented Feb, 24, 1920, Application filed November 13, 191 9. Serial No. 337,880.

two forms of rails with carriages or trolleys be supported by my brackets. I In the arrangement'shown each bracket consists of two parts, both of fiat section, the upper (1) to be placed horizontally while in use and formed at the one (inner) end (2) so as to enter anv rivet or bolt hole conveniently placed and so be instantaneously and securely fixed there, and at the outer end to be formed to receive the tube, rod T 3 or convex T rod (3) from which the tool is'to be suspended as described hereafter. I preferably make the end of the bracket to be inserted in the rivet or bolt hole of a hooked, or as shown, curved formation. The lower part of the bracket (4) forms a stay or strut connected to the upper,

of horizontal part by a bolt andrnut (5) working in a slot The lower part of the stay or strut l) has formed on it a T head (7) see Fig. 1, to bear against the surface to which the apparatus is attached. The slotted attachment (5) and (6) permits the stay or strut to be adjusted on. the line of the upper or horizontal part 1) of the bracket, so that it may bear against the surface whatever the inclination ot' the latter as suggested by the dotted lines in Fig. 1. A rod, meta lic tube, T or convex T rod (3) of convenient length and of suflicient cross section to insure rigidity when loaded, placed at the outer ends of the brackets (Fig. 1) and parallel to the surface to which they are suspended.

A traveling carriage (F ig. 2 (8),) fitted with four fiat tread-or curved wheels (9 and 9 runs on the rod or tube (3) on which the two upper wheels are placed. The pneumatic or other handmachine (10) is then suspended by a steel wire (11) Or othersuitable medium attached to the machine at one end, passing over the third and fourth wheels on the traveling carriage and attached to a suitable counterweight (12) at the other. The machine is thus balanced on the carriage which is free to move in the line of the rod or tube (3). To operate the apparatus the. inner ends 9. of the brackets (Fig. 1) are introduced into rivet or bolt holes so as to be nearly in a horizontal plane as possible, and at a distance of say 12 feet apart, when owing to their form they automatically lock in position-the struts (4) are adjusted so that their lower ends bear counterweight (12) upon the supporting surface. The rod, or tube, (3) is then placed in the formed outer ends'oi' the brackets; the travelingcarriage (8) placed on the rod, or tube (3) and the power hand machine (10) with suitable suspended from it (Fig; 3). a p

'I e carriage (8) withmachine (10) and counterweight 12) is then free to travel in the line of the rod and the machine may be a bracket having a horizontal section curved .upwardly at the inner end and round in cross section to fit a rivet or bolt hole in a r plate, a strut adjustably secured to the hori zontal section and arranged to rest against "the plate through which the'curved endof the horizontal section extends, the curved portion resting against the edges of the hole a so. as to bind in any position in which the strut may be adjusted. 7 s' THOMAS MALCOLM.

Witnesses JOHN SIME, CECIL C..GALL. 

